A band notch UWB bandpass filter using dual-stub-loaded multimode resonator with embedded spiral resonator

作者：Sarkar Pankaj; Rakshit Ishita; Adhikari Sharmili; Pal Manimala; Ghatak Rowdra^*

来源：International Journal of Microwave and Wireless Technologies, 2014, 6(2): 161-166.

DOI：10.1017/S1759078713000998

• UWB bandpass filter (BPF)
• T-shaped resonator
• Spiral resonator
• Asymmetric stepped impedance resonator
• Notch band

This paper presents a band-notched ultra-wideband bandpass filter by loading a short stub and an asymmetric step impedance stub in a uniform impedance resonator. The passband extends from 3.04 to 10.8GHz frequency. The multimode resonator provides a sharp band edge with measured transmission zeros at 2.59 and 13GHz. The later one is due to source load coupling. The passband insertion loss is within 1.5dB. The embedded spiral resonator introduces a notch at 5.25GHz with attenuation of 15dB. The filter exhibits a wide stop band till 15GHz. The in band and out of band performance obtained from full-wave electromagnetic simulation and measurement are in close agreement.

• 出版日期2014-4